Lord Ashcroft has offered Labour £100,000 for the so called "Ed Stone" Getty

A Tory peer has offered Labour £100,000 for a two ton piece of general election memorabilia, the so called "Ed Stone".

The slab was the centre piece of a controversial stunt in the run-up to the election, which saw the former Labour leader Ed Miliband unveil the limestone sculpture to the press in the marginal seat of Hastings.

The tablet had Miliband's six main election pledges chiselled into it and the Doncaster MP's signature at the bottom.

Labour then lost the election, Tory and Hastings and Rye MP Amber Rudd increased her majority, and the Ed Stone went missing.

The press subsequently launched their own search and rescue style mission in a bid to locate the slab.

The Sun, which threw its support behind Cameron before the election, even set up a hotline to help locate the piece of limestone.

On 3 May, four days before the general election, Ed Miliband unveiled an 8ft stone engraved with Labour's election promises.Source: Twitter

The 'Ed Stone' saga

3 May – Ed Miliband unveils the tablet in Hastings.

8 May – Poll results show that Labour have lost the election.

8 May – Miliband resigns as leader of the party.

8 May – The Sun sets up a hotline to help find the stone.

10 May – The press hunt for the piece of limestone is well underway.

13 May – The Guardian reveals that the slab is in South London.

14 May – Chris Whitehouse makes a £5,000 bid for the stone.

3 June – The Guardian reports that the fate of the slab is unknown.

10 June – Lord Ashcroft offers a £100,000 bid for the stone.

UPDATE — 11 June

Whitehouse told IBTimes UK that he later doubled his bid on 14 May to £10,000 on Twitter and explained that he would give the funds to the Trussell Trust. He added: "Mind you, [I'm] not sure I can afford to outbid Lord Ashcroft if he really wants it."